import * as express from 'express'
import { ResultList } from '../../../shared'
import { Job, JobType, JobState } from '../../../shared/models'
import { UserRight } from '../../../shared/models/users'
import { JobQueue } from '../../lib/job-queue'
import {
  asyncMiddleware,
  authenticate,
  ensureUserHasRight,
  jobsSortValidator,
  setDefaultPagination,
  setDefaultSort
} from '../../middlewares'
import { paginationValidator } from '../../middlewares/validators'
import { listJobsValidator } from '../../middlewares/validators/jobs'
import { isArray } from '../../helpers/custom-validators/misc'

const jobsRouter = express.Router()

jobsRouter.get('/:state',
  authenticate,
  ensureUserHasRight(UserRight.MANAGE_JOBS),
  paginationValidator,
  jobsSortValidator,
  setDefaultSort,
  setDefaultPagination,
  asyncMiddleware(listJobsValidator),
  asyncMiddleware(listJobs)
)

// ---------------------------------------------------------------------------

export {
  jobsRouter
}

// ---------------------------------------------------------------------------

async function listJobs (req: express.Request, res: express.Response, next: express.NextFunction) {
  const state: JobState = req.params.state
  const asc = req.query.sort === 'createdAt'

  const jobs = await JobQueue.Instance.listForApi(state, req.query.start, req.query.count, asc)
  const total = await JobQueue.Instance.count(state)

  const result: ResultList<any> = {
    total,
    data: jobs.map(j => formatJob(j, state))
  }
  return res.json(result)
}

function formatJob (job: any, state: JobState): Job {
  const error = isArray(job.stacktrace) && job.stacktrace.length !== 0 ? job.stacktrace[0] : null

  return {
    id: job.id,
    state: state,
    type: job.queue.name as JobType,
    data: job.data,
    error,
    createdAt: new Date(job.timestamp),
    finishedOn: new Date(job.finishedOn),
    processedOn: new Date(job.processedOn)
  }
}